Skid.



F. T. MURDOGH.

SKID.

APPLIGATION IILBD NOV. 22, 1913.

1,1 15,721 Patented Nov. 3, 1914.

3 SHEETS-SHEET l.

F. T. MURDOGH.

SKID. APPLICATION PILEDIOV. 22, 1913.

1, 1 1 5,721 Patented Nov. 3, 19M

3 SHEBTSSHEET 2.

Eihiiri- TH NORRIS PETERS CO..FHO7O-LITP1 L, WASHINGTON. D. c

F. '1. MURDUGH.

SKID.

APPLICATION FILED 1101.22, 1913.

3 SHEETSSHBET 3.

THE NORRIS PETERS CO PHOTO-L!THO.. WASHINCYUN. D C.

Patented Nov. 3, 1914.

' FREDERICK Tenn Melanesiaen'snnriisr, lnntaivn'g v Fig. 3- front elevation of the movable care .riage, Figs. 4 and 5 side elevations of the Tana whom it mag concern? 1 I Be it known thatLFRnonRIoK TEED MUR- noorr, subject of the King of Great Britain and Irelanch and resident ofBelfast, in the county of Antrim, Ireland, have invented certain new and useful Improvements in; ;Sk1ds,: of which thefollowmg 1s a specrfica Myinvention relates to; improvements in portable skids for use in loading and unloading vans, carts, lorriesandthe like and. for other similar purposes, the object being mainly to provide a device in which the goods being dealt with can be raised from the ground on to thevehicle or platform or be lowered therefroma to the ground by -,mechanical means and so -;conserve the energy of the person dealing with the ,loading and unloading ofthe goods, o' My invention consists essentially ofa skid;

frame'the upperqend ofwhich is adapted to be clamped to or to be reared against the? platform or the like to or from which-the goods are to be raised and lowered; a trayersing carriage device to support the goods; =means'for adjusting parts of the carriage device with relationto the skid frame and .1 means for raising and lowering the carriage in the skid fram -My' invention will be fully describedwith reference to the accompanying drawings in which, a Figure l is a front elevation of a portable skid device constructed in accordance with my invention, Fig. 2-side elevation, of-same,

carriage *with the parts indifferent positions,' Fig. 6 front elevation of the clamping device and rope guide, Fig.7 rear elevation of same, Fig. 8 side elevation of the clamping device, Figs. 9 and 10 side elevations of a modified. for'm of the ymovable l'carriage showing the parts in two different'positions; Fig. 11 front elevation of same, Figs. '12 and 13 sideelevationsof a further modification-of the 'movable carriage showing the parts in'two differentpositions, 'Fig. 14 front elevation of same, Fig. 15 side elevation-bf a still :further modification of the movable car'riage and Fig. 16 partial sectional front elevation of same, Fig.1? jplan to an en- ,larged scaleshowing partofqtheirope guid- Ling arrangements" for the hoisting device,

Fig? 18 partial front elevation of same, Fig.

19ffront elevation. showing a slightlyymodi Application filed Novemberfiz, 19 13. Serial n51 802,434;

r other.

7 Specification of Iiettersfif atent. Patented Nov 3, 1914;

' fled form ofthe hoisting arrangemenhrFig. 20 side elevation of same; Fig. v21side elevation to an'enlarged scale of a modified form of means for usting the-movable -carriage shown in F gs.,15 and l6, Fig. 2Q

side'elevation ofa modified form ofith'e' skid 15; frame andymeans for ad usting two of its main parts, Fig. 23 front elevation to an enlarged scale showing the detail mechanism for'ad ustmgthe parts shown in--Fig.

such mechanismbeing inthe adjusted post) tionandfFig; 24ejsimilar view-to Fig. 23

with the parts in process of adjustment.

In accordance with myiinvention andreferring particularly to Figs. 1 to 81 coni'struct "the portable skid from' two side frames a of channel section with; the open sides directed inwardly so as )to, face each Theupper ends of. the frames are .curved and cut away}at b near the extreme the goods are to be raised or lowered." The lower ends of the frames j are adapted to ends to provide [gaps and projections. c whichpassbehindlthe flanged edge d-Offil, lorry or other platform toor from which rest on the ground :and are stayed together transversely by; cross rails e. v

I in con unction wlth a frame arranged as aforesaid I employ amovable carriageadapted'to receive the, goods to be raisedor lowered, such carriage having side frames f connected together by transverse stays g. The side frames support rollers'hfitting freelywithin the grooves of the skid frames a. Projecting from the lower stay of the carriage are. two levers pivoted on the; 2.

-aforesaid stay and having-short arms j at 3 their rear ends i which are bent; upwardly.

a The 'forwardendsof the arms or lovers 7; may be stziyed together if'required and be arranged as a'platform if necessaryLhWhere barrels areto be hoistedor lowered as shown 111F1g2 the arms may be somewhat-hollow on their upper edges. As the skid::frame a may require to be arranged at, different heightof the platform towhich thegoods areto ,be liftedl arrange to I adjust the lovers 12' with relation to, the skid frame so thatsuchglevers may retain a horizontal angles to the horizontal depending upon the.)

position, or be slightly higher at their free ends than at the points where they are pivoted to the frame so as to more easily retain the goods upon the carriage. ,-'l his adjustment is carried out in Figs.- :1 to .5 by eccen- I tries 70 mounted uponstuds m carriedby. the

may be rotated by hand wheels a secured to them or by levers. Figs. 1 and 5 show respectively the extremes of adjustment of the parts; In Figs. 9 to 11 the adjustmentis carried out by connecting the two-levers 2' by a cross bar 0 from which projects upwardly a central arm p provided with a tapped hole to receive a screw q whose forward end bears against one of the cross bars or stays g of the carriageframe. Thescrew can be adjusted by a hand wheel 1 orlever. Figs. '9 and 10 show the extremes of adjustment. Figs. 12 to 14: show another method of adjustment in which the short arms j of the levers i are coupled by a stay bar 8 on which is freely mounted the boss of a screw t the free end of which passes easily through a slot in the upper transverse stay g of the carriage frame. The screw carries-a rotatable nut a by actuating which the levers may be adjusted. Figs. 12 and 13 show the extremes of adjustment respectively. The side frames f in this modification are curved forward to enable the last named arrange- -ment to beadopted. Figs. 15 and 16 show a further modification of the carriage in which the levers z are connected to a cross bar 0 also,

provided with a central arm p as in Fig.11 and with a similar arrangement of screw 9 except that the latter passes through a pivotal'ly mounted nut 12 carried by the upper end of the arm p; This arrangement enables the parts to operate freely and to adjust themselves readily to the changed condition. A somewhat similar arrangement to that in Figs. 15 and 16 is indicated in Fig. 21 except that they screw is passed through a tapped hole in the arm 29, thislatter arrangement only differing from that shown in Figs. 9 to 11 by the connection of the arm p with the cross bar 0. I

In Figs. 22 to 24 the levers or arms 2' are secured to the side frames f by'the devices shown in Figs. 23 and 24:. The side frames are provided with a fixed boss u provided with a ring of teeth 00 while each lever z is provided with a similar fixed boss y having corresponding teeth. 'The parts are secured together by a bolt 2. Fig. 23 shows the parts all looked together by the bolt with the'teeth in engagement while Fig.2t shows the bolt slacked back and the teeth out of engagement so that the armsz' can be raised or lowered about the bolts as pivotal centers to the requiredangle, the parts being afterward locked together as in'Fig. 23. A further feature of the skid frame shown in 1 Fig. 22 is that its'up'per' end is not provided 60.,

with the clamping device to be hereinafter described, such upper end merely resting upon or against the goods platform. The lower end of the skid frame is provided at each side with an extending foot '2 bent downwardly at its-free end 3 so as to-engage with the ground and soform a forward support' in addition to the extreme end of the main skid frame. The extending feet may be coupled together by one or more cross stays and may be adjusted in relation to the skid frame in a similar way to the levers or arms 2', that is to say, by the arrangement shown in Figs. 28 and 2 1.

Inorder to clamp the upper end of the skid frame to the lorry or other platform I'bolt to theupper' cross stay 6 a bracket 4 to the rear side of which is pivoted a screwed link 5 carrying a rotatable nut or tapped lever 6 above which is located freely' n the screw a clamping arm 7 By operating the nut or lever the clamp acts in conjunction with the extreme upper end of the skid frame to fix the latter to the platform.v

The bracket lis provided with an extension 8 to prevent the screw and clamp swinging forward and with a further extension 9 forwardly of the bracket to receive a pin 10 on which is mounted a guide rope pulley 11 connected with the hoisting apparatus.

The hoisting apparatus consistsin Figs. 1and2 of a winch handle 12 fixed to a roller or winding barrel 13, the barrel or its shaft carrying a ratchet wheel 14 which can be held in any required position by a pawl 15.

One end of the hoisting rope for lifting and lowering the goods carriage is fixed to-the barrel 18, then passed over a pulley 16 mounted on a stationary spindle 17. The

then'passes upward and around a second.

pulley 19 and thence downward to the block rope then passes downward and around a to which it is attached. It will therefore be seen that by turning the winch handle clockwise that the goods carriage along with its load can be raised to the platform level: The shape of the skid frame enabels the -movable carriage to pass easily around its I curved portion so as to tip the goods on to the-platform in'the manner indicated in Fig. 20. Goods maybe lowered by turning back the pawl of the winch mechanism and rotating the winding barrel in the oppositedirection. 20 is a guide roller for the hoisting rope 21.

In Figs. 17 to 21 the hoisting rope is arranged ina slightly modified form more 'with the object'of distributing the strains of lifting and lowering at each side of'the center of the movable carriage. With this object in view the hoisting rope 21 passes from the winch barrel as before around a system ofthree pulleys 22 the upper one of which is horizontal. The rope passes from the latter downward'and under two grooved pnlleys arranged on caster brackets 24: pivoted on the carriage frame, said brackets adapting themselves automatically and freely to any position assumedby the carriage.

The hoisting rope passes from the second of the two caster pulleys upwardly thence around a system of pulleys 25 similar to 22 and thence downward to the carriage to clined frame provided with guides, and

a carriage for the load, said carriage being movable longitudinally in the said guides and provided at its upper part with a cross stay; of a hoisting block pivoted to the said stay, two supporting levers pivoted to the lower part of the carriage and adapted to rest on the ground, said levers having short arms which project upwardly in the carriage, adjusting devices for the said levers arranged between the said short arms and the carriage, two stationary guide sheaves journaled at the upper part of the frame with their axis arranged crosswise of the axis of the hoisting block, a hoisting barrel journaled at the middle part of the frame and provided with means for revolving it, and 'a flexible connectionlhaving one end secured to the barrel'and its other end secured to the'hoisting block with its intervening portions running over the said sheaves and hoisting block. 1 t

' In-testimony whereof'I have hereunto set my hand in the presence of two witnesses,

FREDERICK TEEDMURDOCH.

Witnesses: t

ANDREW MAGINNIS, J 01m GOULPERT STEWART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G." a 

